Understanding your paycheck can feel overwhelming. Between federal income tax brackets, FICA contributions, state-specific withholdings, and pre-tax deductions, the gap between your gross salary and what actually hits your bank account is significant. Enter your annual salary, filing status, state, and retirement contribution to see a transparent bi-weekly planning estimate.
Understanding Federal Income Tax Withholding
The United States uses a progressive tax system, meaning your income is taxed at different rates as it moves through seven bracket tiers. In 2026, the 10% single-filer bracket extends through $12,400 of taxable income, while the 37% rate begins above $640,600. Earning more does not push all income into a higher rate—only the portion within each bracket is taxed at that rate.
Your taxable income starts with gross income, adjusted for eligible deductions. The 2026 standard deduction is $16,100 for single filers, $32,200 for married couples filing jointly, and $24,150 for heads of household.
FICA: Social Security & Medicare
Every W-2 employee pays 7.65% of their gross pay in FICA taxes — 6.2% for Social Security (capped at $184,500 in 2026) and 1.45% for Medicare (no cap). High earners face an Additional Medicare Tax of 0.9% on wages above $200,000 (single) or $250,000 (married filing jointly). Unlike federal income tax, FICA is calculated on gross pay before the standard deduction, meaning it applies to every dollar from the first.
State Income Tax: 0% to 13.3%
State income tax varies dramatically. Several states do not broadly tax wage income, while others use flat or progressive systems and may add disability, paid-leave, county, or city withholding. This calculator uses transparent state planning rates; consult your state revenue agency or payroll department for exact withholding.
The Power of Pre-Tax Deductions
Pre-tax deductions like 401(k) contributions, HSA deposits, and employer health insurance premiums reduce your Adjusted Gross Income (AGI) before federal tax is computed. For example, a worker earning $80,000 who contributes 6% to their 401(k) removes $4,800 from their taxable income — at the 22% marginal rate, that's roughly $1,056 in annual federal tax savings, while simultaneously building retirement wealth. Use the 401(k) slider in the calculator above to visualize this effect instantly.